SpamNation believes that the denial of service attacks are being launched by the Zhelatin gang, the same group that is thought to be behind the rapidly growing Storm worm botnet. According to SpamNation, the botnet operators are selling denial of service attacks. "When the firehose of the Zhelatin botnet gets turned on your site, it doesn't mean that it's the gang themselves who have singled you out for attack," says SpamNation. "It's more likely that the attack has been commissioned by one of their customers. In the same way that a customer can order a stock spam run, they can request a DDoS attack."